English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Summary    Powdery mildew disease, elicited by the obligate fungal pathogen  Blumeria graminis  f.sp.  tritici  ( Bgt ), causes widespread yield losses in global wheat crop. However, the molecular mechanisms governing wheat defense to  Bgt  are still not well understood.  Here we found that  TuACO3 , encoding the 1‐aminocyclopropane‐1‐carboxylic acid (ACC) oxidase functioning in ethylene (ET) biosynthesis, was induced by  Bgt  infection of the einkorn wheat  Triticum urartu , which was accompanied by increased ET content. Silencing  TuACO3  decreased ET production and compromised wheat defense to  Bgt , whereas both processes were enhanced in the transgenic wheat overexpressing  TuACO3 .  TuMYB46L, phylogenetically related to  Arabidopsis  MYB transcription factor AtMYB46, was found to bind to the  TuACO3  promoter region in yeast‐one‐hybrid and EMSA experiments.  TuMYB46L  expression decreased rapidly following  Bgt  infection. Silencing  TuMYB46L  promoted ET content and  Bgt  defense, but the reverse was observed when  TuMYB46L  was overexpressed.  Hence, decreased expression of  TuMYB46L  permits elevated function of  TuACO3  in ET biosynthesis in  Bgt ‐infected wheat. The  TuMYB46L ‐ TuACO3  module regulates ET biosynthesis to promote einkorn wheat defense against  Bgt . Furthermore, we found four chitinase genes acting downstream of the  TuMYB46L ‐ TuACO3  module. Collectively, our data shed a new light on the molecular mechanisms underlying wheat defense to  Bgt .

The TuMYB46L ‐ TuACO3 module regulates ethylene biosynthesis in einkorn wheat defense to powdery mildew